DNA Polymerase iota est un gène codé par le symbole POLI. D'autres noms incluent: Eta2; RAD30 homolog B; POLI; RAD30B. DNA Polymerase iota a une masse de 83.01kDa et une longueur d'acide aminé de 740.
Nous proposons 6 des anticorps contre DNA Polymerase iota, élevé dans Lapin et Souris, qui sont appropriés pour le WB, IHC et ELISA avec des échantillons dérivés de Humain, Souris et Rat.
Informations sur les Gènes et les Protéines
Résumé UniProt
Error-prone DNA polymerase specifically involved in DNA repair (PubMed:11013228, PubMed:11387224). Plays an important role in translesion synthesis, where the normal high-fidelity DNA polymerases cannot proceed and DNA synthesis stalls (PubMed:11013228, PubMed:11387224, PubMed:14630940, PubMed:15199127). Favors Hoogsteen base-pairing in the active site (PubMed:15254543). Inserts the correct base with high-fidelity opposite an adenosine template (PubMed:15254543). Exhibits low fidelity and efficiency opposite a thymidine template, where it will preferentially insert guanosine (PubMed:11013228). May play a role in hypermutation of immunogobulin genes (PubMed:12410315). Forms a Schiff base with 5'-deoxyribose phosphate at abasic sites, but may not have lyase activity (PubMed:11251121, PubMed:14630940).
Résumé Entrez
The protein encoded by this gene is an error-prone DNA polymerase involved in DNA repair. The encoded protein promotes DNA synthesis across lesions in the template DNA, which other polymerases cannot do. The encoded polymerase inserts deoxynucleotides across lesions and then relies on DNA polymerase zeta to extend the nascent DNA strand to bypass the lesion.
Spécificité tissulaire
Ubiquitous. Highly expressed in testis.
Similitudes de séquence
Belongs to the DNA polymerase type-Y family.
Modification post-traductionnelle
Monoubiquitinated. Protein monoubiquitination prevents POLI binding to ubiquitin via the ubiquitin-binding motif 1 and ubiquitin-binding motif 2.
Localisation cellulaire
Nucleus.
Binding to ubiquitin mediates localization to replication forks after UV-induced DNA damage.
